Mayo Clinic Health Manager
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By Mayo Clinic staffChildren are much more likely to develop intussusception than adults are. It's the most common cause of bowel obstruction in children between the ages of 3 months and 6 years, with the majority of cases occurring among children younger than 1 year. Intussusception affects boys twice as often as girls. Malrotation, a condition present at birth (congenital) in which the intestine doesn't develop correctly, also is a risk factor for intussusception. Once you've had intussusception, you're at increased risk to develop it again.